Re: [exim] Exim problem with non-TLS supporting senders

On 10/5/12, Wolfgang Breyha <wbreyha@???> wrote:
> Cyborg wrote, on 05.10.2012 14:16:
>> SMTP Data got delivered from the windows system
>> Windows should now send QUIT , but it never happend on our side.
>
> At the point exim waits actively for QUIT/RSET/EHLO the message sent before
> already got delivered after "250 Ok". It had to be an other point in the
> SMTP
> dialog to prevent message delivery.
>
> Otherwise you got an "unexpected disconnect", but without "incomplete
> transaction".

Assuming this is the case, what is the best way to troubleshoot this?
Also with tcpdump as mentioned by Cyborg?